Given the bar graph below, create a grouped frequency distribution:
Hours per week:
0
1
2
3 Mike
4
5 Don
6 Daniel
7 Jake, Greg
8 Asad
9 Sandra
10 Drake
11
12 Andrea
13
This is what i got, please tell me if i did this correctly :)
Hours per week # of persons
3 1
5 1
6 1
7 2
8 1
9 1
10 1
12 1
It looks o.k. to me. You could also follow PsyDAG's advice and put them into
groups of two.
http://www.jiskha.com/display.cgi?id=1312165768
thanks Ms. Sue, i just wanted to be sure i did it correctly...but either way is correct right??
Yep.
great! thanks :)
You're welcome.
To create a grouped frequency distribution from the given bar graph, you need to group the data into intervals and count the number of occurrences within each interval. Let's start by determining the intervals:
The lowest value in the data set is 0, and the highest value is 13. We can create intervals of width 3, starting from 0.
The intervals can be defined as follows:
0-2: This interval includes the values 0, 1, and 2.
3-5: This interval includes the values 3, 4, and 5.
6-8: This interval includes the values 6, 7, and 8.
9-11: This interval includes the values 9 and 10.
12-14: This interval includes only the value 12.
Now, let's count the number of occurrences within each interval:
0-2: 0
3-5: 1 (Mike)
6-8: 3 (Don, Daniel, Jake, Greg)
9-11: 2 (Asad, Sandra)
12-14: 1 (Drake, Andrea)
Here's the grouped frequency distribution:
Hours per week | # of persons
0-2 | 0
3-5 | 1
6-8 | 3
9-11 | 2
12-14 | 1
So, based on the given data, your grouped frequency distribution is correct.